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प्रश्न
Name the scientists who discovered the following:
Safety lamp
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उत्तर
A scientist who discovered Safety lamp: : Sir Humphry Davy
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संबंधित प्रश्न
Give two examples of the following substance.
Food preservatives
What is the contribution of chemistry in following field?
Industry
Name the scientists who discovered the following:
Oxygen
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Inert gases were discovered by ___________
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Explain how medicines are a boon to mankind. State the positive & negative effects of medicines like aspirin and paracetamol.
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Give reasons for the following
Titanium dioxide is an important ingredient in cosmetics.
Give reasons for the following
Aspirin is one of the most widely used medications – globally.
Give reasons for the following
Cosmetics may contain preservatives, as one of their ingredients.
